EP 1713972 A1 20061025 - MULTI-LAYER WEB FORMATION SECTION
Title (en)
MULTI-LAYER WEB FORMATION SECTION
Title (de)
BLATTBILDUNGSTEIL ZUR HERSTELLUNG EINER MEHRSCHICHTIGEN FASERSTOFFBAHN
Title (fr)
SECTION DE FORMATION D'UNE BANDE MULTICOUCHE
Publication
Application
Priority
- FI 2005050026 W 20050211
- FI 20040224 A 20040213
Abstract (en)
[origin: WO2005078187A1] Multi-layer web formation section having at least two successive wire units (300, 310), which have one wire (11) in common. A first headbox (100) supplies fibre pulp to the forward end of the first wire unit (300) and a second headbox (110) supplies a new fibre pulp layer to the forward end of the second wire unit (310) atop a first partial web (W1) formed in the first wire unit (300). In the forward end of a two-wire stretch of the second wire unit (310) there is a first non-pulsating dewatering zone (Z1b), which comprises at least one first formation shoe (200b), which has a curved cap (201) placed on the side of the new fibre pulp layer and provided with openings (202) extending through the cap (201), and an under-pressure (P) affecting through the cap's (201) openings (202). A two-wire stretch of the second wire unit (310) has a second pulsating dewatering zone (Z2b), which is formed by fixed dewatering lists (210b), between which there are gaps (220b) and an under-pressure (Pb) affecting in these.
IPC 8 full level
D21F 1/52 (2006.01); D21F 1/48 (2006.01); D21F 9/00 (2006.01); D21F 11/04 (2006.01)
IPC 8 main group level
D21F (2006.01)
CPC (source: EP US)
D21F 1/52 (2013.01 - EP US); D21F 1/523 (2013.01 - EP US); D21F 9/006 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005078187 A1 20050825; CA 2553067 A1 20050825; CA 2553067 C 20100420; EP 1713972 A1 20061025; EP 1713972 B1 20140101; FI 116628 B 20060113; FI 20040224 A0 20040213; FI 20040224 A 20050814; US 2007163736 A1 20070719; US 7931777 B2 20110426
DOCDB simple family (application)
FI 2005050026 W 20050211; CA 2553067 A 20050211; EP 05708194 A 20050211; FI 20040224 A 20040213; US 59791505 A 20050211